Wheel-cultivator



(No Mddel.) 3 Sheet-s$heet 1.

S. A. D. THOMAS 7 WHEEL GULTIVATOR. No- 355,899.- Patgnted Jan. 11,.1887.

WITNESSES: INVENTOR:

ATTORNEYS.

N. PEYERS. Halo-Lithographer, Wmhinginn. D. C.

(No Model.) 3 Sheets-Sheet 2,

s. A. 1). THOMAS. WHEEL- OULTIVATOR.

Patented Jan. 1 1, 1887.

IIIIIIH 'W- INVENTOE: W 1 BY $0 I wnnnssns:

ATTORNEYS.

nlu-Lmwgnpher. Washington, 04 C- 3 Sheets-Sheet 3.

(No Model.)

S. A. D. THOMAS.

WHEEL GULTIVATOR.

Patented Jan. 11, 1887.

INVENTOR:

' WITNESSES 64m.

W &

ATTORNEYS;

STATES NITEV Arrmr rica.

WHEEL-CULTIVATOR.

SPECIFICATION forming part of Letters Patent No. 355,899, dated January11, 1887.

Application filed September 8, 1886. Serial No. 212,993. (No model.)

Improved WVheeLOultivator, of which the following is a full, clear, andexact description.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of referenceindicatecorresponding parts in all the figures.

Figure 1 is aplan view of my new and improved wheel-cultivator. Fig. 2isa rear ele Vation of the same, parts of the right-hand cultivator beingbroken away to show the construction; and Fig. 3 is a sectional sideelevation taken on the line a; 00 of Fig. 2.

The invention will first be described in connection with the drawings,and then pointed out in the claims.

A A represent two axles, each provided with a wheel, B, and each bent toform a horizontal portion, a, and a vertical portion, a. The said axlesare coupled together by the arched U-shaped coupling-bar 0, connected tothe upright portions a of the axles by the collars c 0.

Upon the horizontal portion of each axle A is placed a tube, D,screw-threaded upon its" outer surface, and upon each of the tubes D isplaced a yoke, E, the hollow hubb of which is internally screw-threadedto match the screw-threads of the tube, so that by turning the tube uponthe axle the yoke E may be moved to the right or left, as desired, toproperly position the cultivator-teeth with respect to the rows of corn.The yokes E are made bowshaped, with upper and lower curved arms, cl d,and in and between the members 01 of each yoke is journaled anexternally-screwt-hreaded vertical rod, F, on which is placed a hollowhub, G, formed with internal screwthreads to match the screw-threads ofthe rod F, so that by turning these rods by a crank applied to the uppersquare end or by other means the said hubs G may be raised or lowered tochange the pitch of the cultivatorteeth. The hubs G are each formed withside arms, 9 g, to which the frames H are secured,

and to these frames are secured the curved beams J, which are providedat their lower ends with the cultivator-teeth K. The hubs Gr are eachformed with a flange, h, to which athird cultivator-beam, M, (shown indotted lines,) may be attached, if desired, and for holding this beam Iform a shoulder, 2', upon the rear part of each frame H, to which thebeam maybe connected, as with the plate h, by a bolt.

For turning the tubes D for laterally shifting the cultivators, Iprovide each tube with a hinged arm or lever, k, which is pivoted to thetube and adapted to be turned to one side into a notched keeper, securedupon the axle for locking the tubes.

For locking the rods F, I secure a notched disk or plate, I, at theirupper ends, into which notchesapin, m, is adapted to be inserted, thepin first passing throughv an orifice in the upper members of the yokesE, so that by simply lifting out these pins the rods F may be turned,and by inserting them said rods are locked and entirely prevented fromturning of their own accord. In some cases, instead of using a crankapplied at e for turning the rods F, I shall form the flanges Z eachwith an arm, n, by which the rods may be conveniently turned.

In order to keep the arch O in proper position relative to the uprightportions or a of the axles A, I secure to each axle by set-screws o aclevis-like device, 0, which embraces the arch 0 below the lugs c, asshown clearly in Fig. 1, and by loosening these set-screws the arch-barmay be raised or lowered, as desired, and to the bend of the arch Isecure a tongue,

N, by which the cultivator is held steady and guided, and the cultivatoris braced at each side from the tongue by the rods 0 O, and is providedwith the single-trees P P, attached by the rods Q Q to the axles A, andby the between the vertical portions of the axles, it

crank-screws, and I therefore do not broadly claim such adjustment.

ICO

. forth.

2. In a wheel-cultivator, the combination,

I with an axle, and yokes adjustable thereon,

of screw-threaded rods in the said yokes, and cultivator-frarnesprovided with internallyscrew-threaded hubs to receive the said rods,substantially as herein shown and described.

3. In a cultivator, the combination, with the externally-screw-threadedsleeve D, of the yoke E, having upper and lower curved arms, d, and acentral hub having internally-screwthreaded huh 12, substantiallyasherein shown and described.

4. In a cultivator, the combination, with the screw-threaded sleeveD,and the yoke E, having the screw-threaded hub b, of the screwthreadedrod F, journaled between the arms ofthe said yoke, and thecultivator-frame H, provided with the internallyscrew-threaded hub G,substantially as herein shown and described.

5. The screwthreaded sleeve D, placed upon the horizontal portion of theaxle and provided with the hinged arm is, in combination with keeperit", into which the arm is may be 5 turned for locking thescrew-threaded tube, substantially as described.

6. The cultivator-frame H, provided with the hub G, having the flange hon its rear side, substantially as herein shown and described.

7. In a wheel-cultivator, the combination,

with the axles A A, having the vertical portions a a, of the U-shapedcoupling-bar O, adjustably secured to the said vertical portions of theaxles,substantia1ly as hereinshown and described.

8. In a wheel-cultivator, the combination, with the axles A, havingvertical partitions a, of the U-shaped couplingbar secured to saidvertical portions, the tongue N, secured to the 5 coupling-bar, and theyokes E, adjustable on the axles of the single-trees P, the braces Q,and the springs R, substantially as herein shown and described.

STEPHEN A. D. THOMAS. IVitness'es: FRANCIS M. DAVIS, JOSHUA JUMP.

